Siemens 7SR45 Argus User Manual page 6

3.19 Real Time Clock .............................................................................................................................. 34
3.20 Battery ............................................................................................................................................ 34
3.21 Firmware Update ............................................................................................................................. 34
List of Figures
Figure 1-1 Functional Diagram of 7SR45 Self Powered Overcurrent and Earth Fault Relay ............................. 8
Figure 1-2 Terminal Diagram of 7SR45 Self Powered Overcurrent and Earth Fault Relay ............................... 9
Figure 2-1 LED Indication Label .................................................................................................................. 10
Figure 2-2 Safety Symbols .......................................................................................................................... 11
Figure 2-3 Relay LCD ................................................................................................................................. 11
Figure 3-1 Logic Diagram: Instantaneous Overcurrent Element .................................................................... 16
Figure 3-2 Logic Diagram: Time Delayed Overcurrent Element..................................................................... 17
Figure 3-3 Logic Diagram: Derived Instantaneous Earth Fault Element ......................................................... 18
Figure 3-4 Logic Diagram: Derived Time Delayed Earth Fault Protection ...................................................... 19
Figure 3-5 Logic Diagram: Instantaneous Measured Earth-fault Element ...................................................... 20
Figure 3-6 Logic Diagram: Measured Time Delayed Earth Fault Element ...................................................... 21
Figure 3-7 Logic Diagram: 50LC Overcurrent Element ................................................................................. 22
Figure 3-8 Operating Time for Single Phase Fault with Binary Output ........................................................... 23
Figure 3-9 Operating Time for Single Phase Fault with Impulse Output ......................................................... 23
Figure 3-10 Reset LEDs Outputs: Reydisp Software Input Matrix ................................................................... 25
Figure 3-11 Reset Flags ................................................................................................................................ 25
Figure 3-12 Binary Input Logic....................................................................................................................... 26
Figure 3-13 Binary Output Logic .................................................................................................................... 28
Figure 3-14 Sensitivity for Single Phase Fault with Binary Output ................................................................... 30
Figure 3-15 Sensitivity for Single Phase Fault with Impulse Output ................................................................. 30
Symbols and Nomenclature
The following notational and formatting conventions are used within the remainder of this document:
·
Setting Menu Location
·
Setting:
·
Setting value:
·
Alternatives:
© 2017 Siemens Protection Devices Limited
MAIN MENU>SUB-MENU
Elem name -Setting
value
[1st] [2nd] [3rd]
7SR45 Description of Operation
Chapter 1 Page 3 of 34